Nasal strips do work for their core purpose: physically holding your nostrils open to improve airflow. Studies show they increase airflow through the nasal valve by about 21% and reduce nasal resistance by roughly 27%. But whether that translates into meaningful results depends entirely on what you’re hoping they’ll fix.
How Nasal Strips Actually Work
A nasal strip is a flexible, spring-like band covered in adhesive. You stick it across the bridge of your nose, and the strip tries to straighten itself, pulling your nostrils slightly outward and open. This targets the nasal valve, which is the narrowest point inside your nose and the spot most responsible for restricting airflow.
The mechanical effect is real and measurable. In lab testing, strips reduced nasal resistance by an average of about 0.5 cmH₂O/L/s, bringing total nasal resistance down from roughly 5.5 to 5.0. That’s approximately a 9% drop in overall resistance to breathing. For people with narrower nasal passages or mild congestion, the proportional benefit can be larger. One study of people with chronic nighttime congestion found nasal resistance dropped by 39% during sleep with a strip on, a statistically significant improvement.
Where They Help: Snoring and Congestion
Snoring is the most common reason people try nasal strips, and the evidence here is encouraging. Clinical trials comparing nights with and without strips found that both external strips and internal nasal dilators significantly reduced the percentage of the night spent snoring. The improvement was consistent enough to reach statistical significance, and users also reported better perceived sleep quality.
For everyday nasal congestion, whether from allergies, a cold, or just naturally narrow passages, strips offer temporary relief by mechanically widening the airway. They won’t reduce swelling or treat the underlying cause the way a decongestant or steroid spray would, but they provide an immediate, drug-free improvement in how easily you can breathe through your nose. That makes them useful as a complement to other treatments or as a standalone option for mild stuffiness, especially at night.
Where They Don’t Help: Sleep Apnea
If your snoring is a symptom of obstructive sleep apnea, nasal strips are unlikely to make a meaningful difference. A study that monitored people with sleep apnea using overnight sleep recordings found no change in the frequency of apnea events or snoring events while wearing strips. The obstruction in sleep apnea typically happens deeper in the throat, at the level of the soft palate or the base of the tongue, well beyond where a strip can reach.
Most people in that study did report feeling like they could breathe through their nose more easily. But the subjective improvement didn’t match any objective change in the sleep data. This is an important distinction: feeling like you breathe better is not the same as resolving the airway collapses that define sleep apnea.
Where They Don’t Help: Athletic Performance
You’ve probably seen athletes wearing nasal strips during games or workouts. A systematic review and meta-analysis pooling data from multiple trials found no improvement in any key performance metric. Maximum oxygen uptake didn’t change. Heart rate didn’t change. Perceived exertion didn’t change. Across 168 participants for oxygen uptake and 138 for heart rate, the differences were essentially zero.
This makes physiological sense. During intense exercise, you naturally switch to mouth breathing because your mouth provides a much larger airway than your nose ever could, strip or not. The modest airflow gains a strip provides simply can’t compete with the volume of air your lungs demand during hard effort. If wearing one makes you feel more comfortable during a light jog, there’s no harm in it, but don’t expect it to affect your pace or endurance.
Structural Nasal Problems
People with a deviated septum or other anatomical narrowing sometimes wonder if strips can substitute for surgery. The answer is nuanced. Strips work on the external nasal valve, the nostril opening itself. A deviated septum is an internal structural problem. Strips can still help if part of your breathing difficulty comes from the nostrils narrowing or collapsing during inhalation, which often coexists with a deviated septum. But they can’t straighten internal cartilage or reduce enlarged turbinates.
In one study where nearly half the participants had a moderately to severely deviated septum, the researchers actually excluded people with confirmed anatomical airway obstruction from their analysis of strip effectiveness. That exclusion tells you something: the benefit is clearest when the problem is at the nostril level rather than deeper inside.
Nasal Strips vs. Mouth Tape
Nasal strips and mouth tape address different parts of the same problem. Strips make it easier to breathe through your nose by widening the nostrils. Mouth tape encourages nasal breathing by physically closing off the alternative. Some people use both together, applying a strip to ensure adequate nasal airflow and then taping the mouth to prevent unconscious switching to oral breathing during sleep.
Preliminary research on mouth taping in people with mild sleep apnea suggests it can encourage the shift from oral to nasal breathing, potentially reducing dry mouth and throat dryness in the morning. But taping your mouth shut carries obvious risks if your nasal airway isn’t adequate, so using a nasal strip alongside it can serve as a safety margin.
Skin Safety and Practical Tips
Skin irritation from the adhesive is a common concern, but the data is reassuring. In a dermal tolerability study of 82 people wearing strips for seven consecutive nights (574 total subject-nights), every single assessment came back with a score of zero: no evidence of irritation. No adverse events were reported at all.
That said, real-world use is messier than a clinical trial. If you have sensitive skin, test a strip on the back of your hand first. Clean and dry your nose before applying, since oil and moisturizer will weaken the adhesive. Extra-strength versions use thicker material with stronger spring tension and are less likely to peel off overnight, which makes them a better choice if standard strips aren’t staying put or if you have wider nostrils that need more lift.
Strips are single-use. Trying to reuse one will give you weaker adhesion and less spring force, defeating the purpose. For the best seal, press the strip down firmly along the edges after applying, then wait a few seconds before breathing normally to let the adhesive set.